Every generation of believers faces the risk of becoming a prisoner to its own myopic vision of the Christian faith, assuming that how it understands and practices faith is always the best. C. S. Lewis cited this problem as a reason for reading old books. “None of us,” he wrote, “can fully escape this blindness, but we shall certainly increase it, and weaken our guard against it, if we read only modern books,” for modern books (as well as the ideas and practices they convey) only tell us what we already know and thus reinforce our blind spots and prejudices. “The only palliative is to keep the clean sea breeze of the centuries blowing through our minds, and this can be done only by reading old books.” Of course people from the past did not get everything right. “People were no cleverer then than they are now; they made as many mistakes as we. But not the same mistakes.” Their successes will teach us; their failures will warn us. “Two heads are better than one, not because either is infallible, but because they are unlikely to go wrong in the same direction.” (in, Sittser, Water from a Deep Well, 18).